Finding the Fourth Proportional to 309,615.98, 427,088.59 and 194,712.37

Step by Step Solution

1. Step 1: Write the proportion equation
   309,615.98 : 427,088.59 = 194,712.37 : x
2. Step 2: Convert to fraction form
   309,615.98/427,088.59 = 194,712.37/x
3. Step 3: Cross multiply
   309,615.98x = 427,088.59 × 194,712.37
4. Step 4: Simplify right side
   309,615.98x = 83,159,431,558.86
5. Step 5: Solve for x
   x = 83,159,431,558.86/309,615.98
6. Step 6: Final answer
   x = 268,588.95